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Finding the Fourth Proportional to 291,991.60, 437,987.40 and 253,500.40

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Solution

The fourth proportional to 291,991.60, 437,987.40 and 253,500.40 is: 380,250.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,991.60 : 437,987.40 = 253,500.40 : x
  2. Step 2: Convert to fraction form
    291,991.60/437,987.40 = 253,500.40/x
  3. Step 3: Cross multiply
    291,991.60x = 437,987.40 × 253,500.40
  4. Step 4: Simplify right side
    291,991.60x = 111,029,981,094.96
  5. Step 5: Solve for x
    x = 111,029,981,094.96/291,991.60
  6. Step 6: Final answer
    x = 380,250.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.